Key techniques for multi-satellite integrated navigation system modeling and controlling

Multi-satellite integrated navigation system, the research focus navigation field both at home and abroad, is expected to improve the precision of positioning service and security of the information. The paper starts with an introduction of the basic concept of multi-satellite navigation system. It then follows a literature review covering mainly the current status of foreign and domestic research in this field. Subsequently, the key techniques of the GPS/GALILEO multi-satellite integrated navigation system have been explored, with the system of modeling method and control algorithm based on Kalman filtering technology as the research emphasis. Finally, the positioning errors of GPS, GALILEO and GPS/GALILEO systems are compared by the experiments along a typical route. Furthermore, the results show that the precision of navigation can be improved by way of multi-satellite integrated navigation because of more visible satellites and better space distribution structure. In particular, the modeling method and control algorithm for multi-satellite system presented in the paper will show the crucial significance in terms of improving accuracy in positioning applications.